Separable fastener



F. S. CARR SEPARABLE FASTENER Sept 18, 1928.

Filed Dec. 20, 1924 f M1 @nous bbl-1* y eflya.

Patented Sept. 18, 1928.

UNTE STATES PATENT OFFCE.

FRED S. CARR, OF NETTON, MASSACHUSETTS, ASSGNOR TO CARB. FASTENER COlYI- PANY, OF CAMBRIDGE, MASSACHUSETTS, A CORPORATTON F IlIAINE.

SEPARABLE FASTENER.

Application led December 20, 1924.

This invention aims to provide an improved separable fastener.

In the drawings, which illustrate a preferred embodiment of my invention Figure 1 is a. front elevation of the fastener;

Fig. 2 is a section on the line 2 2 of Fig. 1, being partly in elevation;

Fig. 3 is a rear elevation of the socket atm tached to a flexible support;

Fig. 4 is an elevation view of the socket before it is secured to its support and with the cap removed; and

Fig. 5 is a side elevation of the back plate.

Referring to the drawings, I have shown a separable fastener which is particularly useful as a curtain fastener or as a glove fastener, although it may be used for many other purposes where a snap fastener is required.

The stud illustrated is of the well known hollow pressed type, having a head 1, a neck 2 and a base portion 3. The base portion is crimped over the head 4 of an attaching screw 5, which is secured to a rigid support 6, such as the body of an automobile as shown in Fig. 2.

The socket is secured to the curtain 7 and includes a stud-engaging part having a base portion 8 and a tubular portion pressed from the center of the base portion and slit throughout its entire length and partly into the base ortion 8 to provide a plurality of resilient 'ngers 9. These lingers are provided at their free ends with reversely bent neckengaging portions 10 preferably bent inwardly to engage the neck of the stud. The resilient fingers are substantially parallel with the axis f the stud and are free to expand to a limited extent, as more fully hereinafter described. The base portion 8 of the stud-engaging part also presents at its outer periphery a prong-receiving portion, which comprises an anvil portion 11 and a clench portion 12, to which is secured a cap member 13 (Fig. 2) for concealing the underlying portions of the socket. This cap may or may not be used, but I prefer to use it so as to provide a neat and finished appearance to the socket when viewed from the outer face of the curtain 7.

While the socket may be secured to the curtain 7 in any suitable manner, I prefer to secure it thereto so that the base portion 8, of the stud-engaging part, will overlie a portion of the outer face of the curtain 7.

fill

Serial No. 757,161.

The resilient fingers 9 pass through an aperture 14. in the curtain 7 and extend slightly beyond the inner face of the curtain 7. A back plate 15 is applied to the inner face of the curtain and is secured to the stud-engaging part by a plurality of attaching prongs 16. These prongs project from the periphery of the back plate (Fig. 5) and extend through the curtain 7 where they are bent outwardly and downwardly by the anvil portion 11 against the ciench portion 12, thus securing all the parts of the socket to the curtain. The back plate also presents an aperture 17 through which the resilient fingers 9 protrude, and which is large enough in diameter to permit the resilient fingers to expand during engagement and disengagement with the stud. The wall. surrounding the aperture, back supports the resilient fingers and prevents too great expansion thereof, when strain is exerted thereon. Thus the resilient fingers are back supported by the back plate 15 so that the fastener cannot be separated by resolution of forces due to lateral strain exerted upon the curtain 7.

The slots 18 between the fingers 9 extend into base portion 8 (Fig. 4) sufficient distance to permit the fingers to bend upon straight lines, passing through the fiat base portion 8 between the slots 18, during contraction and expansion thereof. By extending the slots to the base 8, the fingers 9 may bend more easily with less possibility of their becoming set because they do not bend upon the curved portion as would be the case if the slots terminated at or before reaching the base portion. Thus I have provided a socket which is strong and durable and which is simple and inexpensive to manufacture.

While I have shown and described a preferred embodiment of my invention, it will be understood that changes involving omission, substitution, alteration and reversal of parts, and even changes in the mode of operation, may be made without departing from the scope of my invention, which is best defined in the appended claims.

Claims:

1. A fastener socket installation comprising, in combination, a carrying medium, a stud-receiving part having a flange seated against the outer face of the carrying medium, a tubular portion extending from said flange through an aperture in said carrying medium and turning and clenching means formed integral with said flange, said turning and clenching means being presented at said outer fa ce of the carrying medium, and means presenting a plurality of attaching prongs, said means seated on the inner tace of the carrying medium, said prongs piercing the carrying medium and engaging the turning and clenching means to secure said stud.- receiving part in position.

2. A fastener socket installation comprising, in combination, a carrying medium, a stud-receiving part having a flange seated against the outer face ot the carrying medium, a tubular portion extending from said flange through an aperture in said carrying medium, prong turning and clenehing means formed integral with the lange of said studreceiving part, and an attaching plate at the inner face ot the carrying medium presenting a plurality of attaching prongs adjacent to its outer periphery for piercing the carrying medium and engaging the turning and clenching means to secure the stud-receiving part to the carrying medium.

3. A fastener socket comprising a studreceiving part presenting a combined hase portion and a prong-receiving and elenching portion formed from the same piece of metal and located at the outer face ot a exible support, a back plate located at the inner face of the support and presenting an aperture therethrough and a plurality of prongs extending from said back plate, said prongs piercing the support and clenched into engagement with the prong-receiving portion and a plurality of eontractihle and expansihle stud-engaging portions extending from said hase portion through an aperl ure in the support and the aperture in the hack plate and said stud-engaging portions limited in their expansive movement hy the Wall surrounding said aperture in said hack plate.

4. A fastener socket installation comprising a carrying medium, a one piece studreceiving part presenting a. base portion and a prong-receiving and clenching portion located at the outer face of the carrying medium, a back plate located at the inner face of the support and presenting an aperture therethrough, a plurality of prongs presented at the outer periphery ot' said back plate, said prongs piercing the support and clenched by the prong-receiving portion and a plurality of eontractible and expansible stud-engaging portions extending 'from said hase portion through the support and the aperture in the back plate, said portions being limited in their expansive movement by said hack plate, and a cover plate secured to said stud-engaging part to conceal it from View at the outer Ytace ot the support.

ln testimony whereof, I have signed my` name to this specification.

FRED S. CARR. 

